SOLUTION: Hi 5 friends each ordered either a bowl of noodles at $2.50 or a plate of fish and chips at $5.00. If they spent $17.50 how many of them had noodles.

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Question 1208882: Hi
5 friends each ordered either a bowl of noodles at $2.50 or a plate of fish and chips at $5.00. If they spent $17.50 how many of them had noodles.

Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
f%22=%22numberoffriendswhoorderedfish
n%22=%22numberoffriendswhoorderednoodles

system%28f%2Bn=5%2C5f%2B2.5n=17.5%29 --> system%28n=5-f%2C10f%2B5n=35%29 --> system%28n=5-f%2C10f%2B5%285-f%29=35%29 --> system%28n=5-f%2C10f%2B25-5f=35%29 --> system%28n=5-f%2C10f-5f=35-25%29 --> system%28n=5-f%2C5f=10%29 --> system%28n=5-f%2Cf=2%29 --> system%28n=5-2%2Cf=2%29 --> highlight%28system%28n=3%2Cf=2%29%29